纳米Ru催化剂催化喹啉加氢反应  

Hydrogenation of Quinoline Catalyzed by Ru Nanoparticle Catalyst

作　　者：陈骏[1] 薛芳[1] 付海燕[1] 樊光银[1] 袁茂林[1] 陈华[1] 李贤均[1] 

机构地区：[1]四川大学化学学院有机金属络合催化研究所绿色化学与技术教育部重点实验室,四川成都610064

出　　处：《催化学报》2007年第11期975-979,共5页

摘　　要：制备了高分散性负载型5%Ru/C催化剂,采用X射线衍射、X射线光电子能谱和高分辨透射电镜对催化剂进行了表征.结果表明,所制得的5%Ru/C催化剂分散度高,金属钌的平均粒径小于5nm.在喹啉加氢反应中,催化剂显示出很高的催化活性和生成1,2,3,4-四氢喹啉的选择性,但未检测到十氢喹啉生成.补加新鲜催化剂后,1,2,3,4-四氢喹啉可全部转化为十氢喹啉.对喹啉加氢机理进行了探讨.A highly dispersed Ru-containing catalyst （5% Ru/C） was prepared and characterized by X-ray diffraction, X-ray photoelectron spectroscopy, and high resolution transmission electron microscopy. The results showed that ruthenium was reduced to zero valence, and the average particle diameter of Ru crystallites was smaller than 5 nm. The ruthenium-based catalyst exhibited the highest activity for the hydrogenation of quinoline compared with other activated carbon-supported catalyst. Under the optimum reaction conditions of 100 ℃, P（H2） = 3.0 MPa, and Ru/quinoline molar ratio of 4/1 000, the main product obtained was the partially hydrogenated 1,2,3,4-tetrahydroquinoline, and the selectivity was up to 98.5 %. The decahydroquinoline was not found in the products. However, after the fresh 5 % Ru/C catalyst was added, 1,2,3,4-tertrahydroquinoline was completely transformed to decahydroquinoline. The mechanism of quinoline hydrogenation was also discussed.

关 键 词：钌 活性炭 催化加氧 喹啉 1 2 3 4.四氢喹啉 十氢喹啉 

分 类 号：O643.32[理学—物理化学]